Ludwig rossler



(No Model.)

, L. ROSSLER. SAFETY APPARATUS FOR GAGES.

Patented May 25,1897.

UNITED STATES PATENT OFFICE.

LIIDIVIG RGSSLER, OF AIBLING, GERMANY.

SAFETY APPARATUS FOR CAGES.

SPECIFICATION forming part of Letters Patent No. 583,125, dated May 25,1897.

Application filed September 2, 1896. Serial No. 604,684. (No model.)

To all whom it may concern.-

Be it known that I, LUDWIG RossLER, a citizen of Germany, and a residentof Aibling, Bavaria, Germany, have invented certain new and usefulImprovements in Safety Apparatus for Cages, of which the following is aspecification.

The present invention is a safety apparatus for elevators which in caseof the cable breakin g acts automatically.

In Figure 1 a front view of the apparatus attached to the half of anelevator is shown. Fig. 2 shows a horizontal section thereof.

As shown in the drawings, the apparatus is attached to the top of theelevator and is arranged as follows: On the side of the elevator-cageAis an incline extending from the top downwardly and inwardly,terminating in a pocket at, which supports a roller b,loosely heldtherein. Two arms-d press on each side of the hub of the roller 1),these arms being pivoted at the upper corner of the elevatorcage at 0.An eccentric g, pivoted in the plate e at f, presses against the arms d.The eccentric g has an arm engaging the bolt 2', carrying theelevator-cage. Between the arm h and the upper cross-rails of theelevatorcage a strong spiral spring 70 is located, which as long as thecable bearing the elevator-cage is drawn taut is compressed by thetension of the bolt 2'. The bolt 11 is so constructed that even if thecable breaks it cannot fall out of the head or top of the elevator-cage,so that the spiral spring is always kept inits place. The guiding-railsl at the sides of the elevator-cage well are coated inwardly with wood,Fig. 2.

When the cable breaks, the strain or tension on the bolt o' ceases andthe spring is is freed. The spring it quickly expands and presses thearm 7L firmly downward. By the long lever-arm the eccentric is pressedtightly against the downwardly hanging arms d, which in their turn pressthe roller 1) out of its bearing in the pocket a upwardly against thewood in the guiding-rails. The roller slides with the hub upwardly alongthe arms d, and by the friction instantly exerts a stopping action tillthe roller grips so firmly the wood that it is firmly fixed, therebypreventing a further descent of the elevator-cage. The stop is veryrapid, yet not so sudden as to produce a violent shock. The action israther an elastic one, calculated to prevent accidents which might arisefrom a sudden shock, so that persons or objects would not be thrown outof the elevator-cage.

IVhat I claim is- 1. A safety apparatus for elevators comprising alooselysupported roller, pivoted arm d in contact with the same, aneccentric for moving the pivoted arm and a connection between theeccentric and the elevator-cable, substantially as described.

2. A safety device for elevator-cages comprising the inclined supportshaving the pockets a, the roller therein, an arm operatin g between thesupports pivoted at its upper end and free at its lower end and meansfor operating the arm to throw the roller out of the pocket and topresent an incline for forcing the roller into gripping action.

In testimony that I claim the foregoing as my invention I have signed myname in pres ence of two subscribing witnesses.

LUDWVIG ROSSLER.

WVitnesses:

A. S. BiisINe, M. SUPPLE.

